<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>改变背景颜色</title>
	</head>
	<body>
		<button onclick="color('red')">设为红色</button>
		<button onclick="color('yellow')">设为黄色</button>
		<button onclick="color('cyan')">设为蓝色</button>
		<input type="color" onchange="a(this)"/>
		<script src="js/script.js"></script>
	</body>
</html>
